cid.c File Reference

Context ID (CID) routines. More...

#include "cid.h"
#include "sdvl.h"
#include <stdint.h>
#include <assert.h>

Include dependency graph for cid.c:

Functions
static uint8_t	c_add_cid (const int cid)
	Set an add-CID value.
int	code_cid_values (const rohc_cid_type_t cid_type, const int cid, unsigned char *const dest, const size_t dest_size, size_t *const first_position)
	Build the CID part of the ROHC packets.

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Detailed Description

Context ID (CID) routines.

Author:

Didier Barvaux <didier.barvaux@toulouse.viveris.com>

Didier Barvaux <didier@barvaux.org>

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Function Documentation

static uint8_t c_add_cid

(

const int

cid

)

[static]

Set an add-CID value.

Add-CID is needed when using small CIDs.

Parameters:

cid	The small CID to set

Returns:

The add-CID byte

int code_cid_values	(	const rohc_cid_type_t	cid_type,
		const int	cid,
		unsigned char *const	dest,
		const size_t	dest_size,
		size_t *const	first_position
	)

Build the CID part of the ROHC packets.

Parameters:

cid_type	The type of CID in use for the compression context: ROHC_SMALL_CID or ROHC_LARGE_CID
cid	The value of the CID for the compression context
dest	The rohc-packet-under-build buffer
dest_size	The length of the rohc-packet-under-build buffer
first_position	OUT: The position of the first byte to be completed by other functions

Returns:

The position in the rohc-packet-under-build buffer in case of success, -1 in case of error